DM100 Bitstream Analyzer User's Manual - Dolby Laboratories Inc.

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DM100 Bitstream Analyzer User's Manual - Dolby Laboratories Inc.

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Status

Switches display to top-level

status menu; shows details of

input or output bitstream

Power

Hold for two seconds to

turn DM100 on or off

Shift [LCD]

Momentarily enables or

disables LCD backlight

Shift [P1-P4]

Selects user-assigned custom

presets

Esc

Moves display up one level

in menu tree, or aborts

current operation

Up/Down Buttons

Scroll through status or

setup menu trees; changes

DM100 Bitstream Analyzer

Bitstream Analyzer

Model DM100

Error

Esc

PCM

Dolby Dolby V Ref

Digital E

LCD P1 P2

Power Status Mon

Shift

Setup Gen

P3 P4

Enter

Volume

Mon

Gen

Setup

RS-232

settings Enter

Interface

Connector

For test bitstream uploads,

data logging, and firmware

upgrades

Volume Buttons

Control level of speaker

or headphone output (speaker

is disabled when headphone

is used)

LEDs

Flashing Red: Low battery

Error

Flashing Red: Error counter changed

Red: Error condition

See Error Stats menu, Section 3.2.8

for these functions

PCM, Dolby Digital,

Dolby E

Green: Receiving indicated input

signal

Flashing Green: (equal on/off)

Decode Format setting does

not match the input

Flashing Green: (long on)

AES3 channel status is being modified

in Passthrough Mode. See Section 4.3.

V Ref

Green: A valid video reference

input signal is present, and unit

is in a mode that requires it

Off: Current mode does not require

a video reference

Flashing Green: Current mode requires

a video reference and it is invalid or

not present

Resets internal settings to

quickly allow monitoring of

input bitstreams. Does not

change output mode.

Turns on generator, and displays

bitstream select menu; pressing

again generates next bitstream

in list

Switches display to

top-level setup menu;

use to set DM100 options

Moves down one level in

current menu item, or selects

currently displayed option;

also used to switch bottom

line of LCD between graphic

or numeric display from certain

status menu items


Dolby Laboratories, Inc.

Corporate Headquarters

Dolby Laboratories, Inc.

100 Potrero Avenue

San Francisco, CA 94103-4813

Telephone 415-558-0200

Fax 415-863-1373

www.dolby.com

European Headquarters

Dolby Laboratories, Inc.

Wootton Bassett

Wiltshire, SN4 8QJ, England

Telephone (44) 1793-842100

Fax (44) 1793-842101

Dolby ® DM100 User’s Manual

Dolby and the double-D symbol are registered trademarks of Dolby Laboratories. Surround EX is a

trademark of Dolby Laboratories. Toslink is a trademark of Toshiba Corporation. Windows is a

registered trademark of Microsoft Corporation. All other trademarks remain the property of their

respective owners.

© 2003 Dolby Laboratories Inc. All rights reserved.

S03/13416/14616 Issue 2 Part No. 91751

i


Dolby ® DM100 User’s Manual

Table of Contents

Chapter 1 Introduction

1.1 About the DM100..................................................1-1

Chapter 2 Getting Started

2.1 Power.....................................................................2-1

Battery Installation.....................................2-1

[Power] Button...........................................2-2

Battery Low LED.......................................2-2

Auto-Power Off..........................................2-2

2.2 Rear Belt Clip/Stand..............................................2-3

2.3 Inputs .....................................................................2-4

Dolby Digital..............................................2-4

Dolby E ......................................................2-4

PCM ...........................................................2-4

Other...........................................................2-4

Video..........................................................2-4

2.4 Outputs ..................................................................2-5

Headphone Output .....................................2-5

Speaker Output...........................................2-5

2.5 Hookup ..................................................................2-6

2.6 Quick Start.............................................................2-7

Making Your First Reading .......................2-7

Generating a Bitstream...............................2-7

2.7 Advanced Features ................................................2-8

Measuring the Latency of Equipment ........2-8

Measuring Audio/Video Frequency Drift ..2-8

iii


Dolby ® DM100 User’s Manual

Chapter 3 Operation: Status Mode

3.1 Main Status Screen................................................ 3-1

Dolby E ..................................................... 3-2

Dolby Digital ............................................. 3-3

PCM ........................................................... 3-3

NULL Data ................................................ 3-4

Pause Data.................................................. 3-4

Data Type X............................................... 3-4

3.2 The Status Menus .................................................. 3-5

3.2.1 Dolby E Metadata Input Menu................... 3-6

Px Prog Desc.............................................. 3-7

Px Dialogue Lev ........................................ 3-7

Px Channel Mode....................................... 3-8

Px LFE Channel......................................... 3-8

Px Bitstrm Mode........................................ 3-8

Px Line Mode Pro ...................................... 3-9

Px RF Mode Pro......................................... 3-9

Px RF Ov Protect ....................................... 3-9

Px Center Dwnmx...................................... 3-10

Px Srnd Dwnmx......................................... 3-10

Px Dolby Srnd............................................ 3-10

Px Mixing Level ........................................ 3-11

Px Room Type ........................................... 3-11

Px Copyright .............................................. 3-11

Px Orig Bitstrm.......................................... 3-11

Px Extnd Bitstrm........................................ 3-12

Px DC Filter ............................................... 3-13

Px Lowpass Filt.......................................... 3-13

Px LFE Filter.............................................. 3-13

Px Srnd 3dB Attn....................................... 3-13

Px Srnd Ph Shift......................................... 3-13

Px Begin Gain............................................ 3-13

Px End Gain ............................................... 3-13

iv


Dolby ® DM100 User’s Manual

3.2.2 Dolby Digital Metadata Input Menu ..........3-14

DD Dialogue Lev .......................................3-15

DD Channel Mode .....................................3-15

DD LFE Channel .......................................3-15

DD Data Rate .............................................3-16

DD Bitstrm Mode.......................................3-16

DD Line Mode Pro.....................................3-17

DD RF Mode Pro .......................................3-17

DD Center Dwnmx ....................................3-17

DD Srnd Dwnmx .......................................3-18

DD Dolby Srnd ..........................................3-18

DD Mixing Level .......................................3-18

DD Room Type..........................................3-19

DD Copyright.............................................3-19

DD Orig Bitstrm.........................................3-19

DD Extnd Bitstrm ......................................3-20

DD Dual Mono MD ...................................3-21

DD Format .................................................3-22

DD Sample Rate.........................................3-22

DD Bitstream ID ........................................3-22

DD Stream #...............................................3-23

3.2.3 AES3 Status Menu .....................................3-24

3.2.4 Input Level Menu.......................................3-26

3.2.5 Generator Status Display............................3-27

3.2.6 Video Reference Status Display.................3-28

3.2.7 Timecode Status Display............................3-29

3.2.8 Error Stats Menu ........................................3-30

3.2.9 DM100 Firmware Version .........................3-31

v


Dolby ® DM100 User’s Manual

Chapter 4 Operation: Setup Mode

Introduction ................................................................... 4-1

4.1 Monitor Control..................................................... 4-2

4.2 Gen Control ........................................................... 4-4

4.3 AES3 Output ......................................................... 4-6

4.4 User Presets ........................................................... 4-8

4.5 I/O Control ............................................................ 4-9

4.6 System Settings ..................................................... 4-10

Chapter 5 Reference Information

5.1 Data Transfer......................................................... 5-1

Test Bitstream Loading.............................. 5-1

Data Logging ............................................. 5-1

Firmware Upgrade ..................................... 5-2

Data Transfer Error Messages.................... 5-2

5.2 Unit Reset.............................................................. 5-3

Restore Default Settings ............................ 5-3

Hardware Reset.......................................... 5-3

5.3 Connector Pinout Information............................... 5-4

5.3.1 RS-232 Serial Port ..................................... 5-4

5.3.2 XLR Connectors ........................................ 5-4

5.3.3 Headphone Connector................................ 5-4

5.4 DM100 Specifications........................................... 5-5

5.5 System Block Diagram.......................................... 5-2

vi


Dolby ® DM100 User’s Manual

1-1

Chapter 1

Introduction

1.1 About the DM100

The Dolby ® DM100 is a hand-held diagnostic tool that can

monitor or generate Dolby Digital, Dolby E, and PCM

bitstreams. The unit allows audio systems integrators and service

engineers to quickly test the integrity and composition of these

signals throughout a facility. The DM100 is intended for use in

broadcast, cable, DBS, and postproduction facilities, as well as

DVD mastering and home theater installation.

The DM100 accepts input signals via XLR, BNC, and Toslink connectors. The unit identifies the format of the input signal and

activates the appropriate built-in decoder. The decoded analog

signal, sent to a standard 1/8-inch stereo headphone jack, can be

switched to monitor any two decoded channels, while a small

built-in speaker can monitor the sum of any channel pair. A

front-panel LCD displays Dolby Digital and Dolby E metadata

information. Six front-panel LEDs indicate critical bitstream and

system status information.

A set of Dolby Digital, Dolby E, and PCM test bitstreams is

stored in internal, nonvolatile RAM, and can be changed in the

field via software download. The selected test bitstream is

produced simultaneously on all output connectors. The unit can

receive and decode an input signal while simultaneously

generating a test bitstream. The DM100 also features a passthrough

mode that allows modification of the input signal’s AES

channel status bits before passing the signal to the output

connectors. (The input signal can be monitored simultaneously.)

The DM100 also includes system level tests, such as latency

measurements, and the ability to check the clock

synchronization between audio and video signals.


Dolby ® DM100 User’s Manual

2-1

Chapter 2

Getting Started

2.1 Power

The DM100 is powered by four standard AA 1.5 V batteries or

from an external 6V, 800 mA DC power supply via the power

input connector. The internal batteries are disconnected when

the external DC power supply is used.

Battery Installation

Push the cover in

the direction shown

to slide it out.

Insert four AA

batteries,

alternating the

positive and

negative terminals,

and replace the

cover.


Dolby ® DM100 User’s Manual Getting Started

[Power] Button

To turn on the DM100, press and hold the [Power] button down

for two seconds. The display reads as shown for approximately

one second while a self-test diagnostic runs.

Model DM100

Unit Name

The power-on process ends with the DM100 operating in the

last-used state. If the diagnostic test fails, the Error LED lights

and an error message is displayed.

To turn off the DM100, press [Power] again. The display reads

“Power Off” and the unit shuts off.

Power Off…

Note: Any changes made to the system settings may be lost if the unit is

powered off by unplugging the external power supply, unless batteries

are installed.

Battery Low LED

The front-panel battery LED flashes when the

batteries are nearly discharged. If the battery

voltage drops below a usable level, the

DM100 display reads “Dead Battery” and the

unit shuts off.

Dead Battery…

Auto-Power Off

When the DM100 is powered from batteries (external power

supply not connected), the unit can be set to turn itself off after a

selectable number of minutes with no user activity (5, 10, 15, or

30 minutes). This feature can be disabled. The factory default

setting is 15 minutes.

The wait time is set from the Setup menu under System Settings,

Power Management. See Section 4.6 for more information.

2-2


Dolby ® DM100 User’s Manual Getting Started

External DC Power Supply

When powered from the external power supply, the Power

Management setting is ignored and the unit remains switched on.

The LCD backlight and keypad backlights are also enabled,

overriding the LCD Backlight setting. See Section 4.6 for more

information.

2.2 Rear Belt Clip/Stand

The pull-out clip on the rear of the DM100 can be used as a

handy belt clip or a stand. Raise the clip by following these two

steps:

1. Lift to release

2. Pull up

1

2

2-3

2

LIFT TO UNLATCH

2 PULL OUT

1 1 LIFT TO UNLATCH


Dolby ® DM100 User’s Manual Getting Started

2.3 Inputs

Each input connector (XLR, BNC, or Toslink ) is active when

specifically selected, or, if the input selection is set to autodetect,

the first input with a valid AES3 signal becomes the active

input. See Section 4.5 for setting the input select function. See

the specifications in Section 5.4 for details on supported sample

rates, impedances, and more.

The digital input format can be Dolby ® Digital, Dolby E, or

PCM.

Dolby Digital

The DM100 accepts 16- and 32-bit Dolby Digital bitstreams. It

also accepts AES3 data that contains multiple Dolby Digital

bitstreams (i.e., one 16-bit mode bitstream in each AES3

channel).

Dolby E

The DM100 accepts 16-, 20-, and 24-bit Dolby E bitstreams at

NTSC (29.97 fps), PAL (25 fps), 23.98 fps, 24 fps, and 30 fps

rates.

PCM

If the input signal does not contain a header indicating that a preencoded

bitstream is being received, the DM100 assumes the

input signal is PCM audio.

Other

The DM100 also accepts non-audio data over AES3. In this

case, the LCD indicates that data is being received and the audio

output mutes.

Video

The unit can use an analog composite NTSC or PAL black burst

reference video signal for signal generation, via the Ref Video

RCA connector. The input is internally terminated at 75Ω.

2-4


Dolby ® DM100 User’s Manual Getting Started

2.4 Outputs

The XLR and BNC output connectors are always active. The

Toslink connector is enabled when it is selected.

The digital output signal can be:

Pass-through Dolby Digital, Dolby E, or PCM.

The output clock is locked to the digital input.

Or

An internally generated Dolby Digital, Dolby E, or PCM test

bitstream.

The output clock can be locked to an internal 48 kHz clock, a digital input

signal, or to 48 kHz derived from the video reference input. See Section 4.5

for more information.

Headphone Output

The headphone output is used to monitor the decoded

Dolby Digital, Dolby E, or PCM signal. Front-panel buttons

adjust the headphone volume.

Speaker Output

The speaker output is used to monitor the decoded Dolby

Digital, Dolby E, or PCM signal when headphones are not being

used. The signal is a mono version of the headphone output.

Front-panel buttons adjust the speaker volume.

Note: When listening to Dolby Digital bitstreams on the speaker output, RF

Mode compression is always applied, regardless of the

DD Compression setting in the Monitor Control Setup menu.

See Section 4.1 for more information.

2-5


Dolby ® DM100 User’s Manual Getting Started

2.5 Hookup

Figure 2-1 shows the locations for connecting components to the

DM100.

Ref Video In

BNC F to RCA M

Part Number 70217

Power Adapter

Part Numbers: 54065 USA

54066 UK

54067 Europe

54068 Australia

Figure 2-1 Connections

Note: References to the front-panel buttons are shown using brackets

throughout this manual (e.g., “[Status]”). References to multiple-button

combinations mean sequences, not simultaneous button presses. Press

the first button, release, and then press the next button.

2-6

Toslink Cable

RCA F to BNC M

Part Number 70218


Dolby ® DM100 User’s Manual Getting Started

2.6 Quick Start

The DM100 is designed to be easy and intuitive to use. Follow

these simple procedures to begin taking your first readings and

generating your first test streams.

Making Your First Reading

1. Turn on the unit by pressing [Power].

2. Connect the input signal to the appropriate connector.

3. Press [Mon]. This resets all the internal monitoring setup

functions to the defaults.

The LEDs should display the signal type received, and the

display shows information about the incoming signal. If you

cannot see this information, press [Status], then use [Enter],

[Esc], and the [Up/Down] buttons to navigate through the status

menus to view information about the incoming signal. See

Section 3.2 for additional information.

Adjust the audio level with the dedicated [Volume] buttons.

Generating a Bitstream

1. Press [Gen] once. This turns the generator on and outputs a

PCM test signal.

2. To select other test streams, continue to press [Gen].

Different clock sources can be used for the generator; these can

be selected in the Gen Clock Source menu:

Setup / I/O Control / Gen Clock Source

See Section 4.5 for more information.

To read the current status of the generator, press [Status] and

navigate using the [Down] button until Generator Enter to

View is displayed. Press [Enter] to see the current settings. See

Section 3.2.5 for more information.

You can even connect the output of the DM100 to the input.

Doing this allows you to listen to the test stream and view all of

the streams’ settings.

2-7


Dolby ® DM100 User’s Manual Getting Started

2.7 Advanced Features

Measuring the Latency of Equipment

The DM100 can be used to measure the latency of other audio

equipment. At user-defined intervals, the DM100 generates a

short burst of white noise, then measures the time taken for the

signal to return.

Set the DM100 to measure latency by following these steps:

1. Go to the Gen Control / Output Mode setup menu, and

select Latency Test (see Section 4.2).

2. Connect the Digital Out from the DM100 to the

equipment to be measured.

3. Connect the output of the equipment to be measured to

the DM100’s Digital Input.

Different clock sources used for the generator can be set in the

I/O Control / Gen Clock Source setup menu (see Section 4.5).

The time interval between the noise bursts can be set in the

Gen Control / Noise Burst Rate setup menu (see Section 4.2).

To read the measured latency, press [Status] and navigate using

the [Down] button until Generator ENTER to View is

displayed. Press [Enter] to display the measured latency in either

AES samples or milliseconds (see Section 3.2.5).

Measuring Audio/Video Frequency Drift

The DM100 determine if an AES digital audio or reference

signal is frequency-locked to a video black burst reference

signal. The unit locks to the video reference, then measures the

frequency difference between the Digital In input and the video

reference.

2-8


Dolby ® DM100 User’s Manual Getting Started

Set the unit to measure frequency drift as follows:

1. Go to the Gen Control / Output Mode setup menu, and

select A/V Freq Drift (see Section 4.2).

2. Connect a 29.97 or 25 fps video reference to DM100’s

V Ref input.

3. Connect the test AES signal to the DM100’s Digital In.

Read the measured frequency drift between the AES and video

signals by pressing [Status] and then navigating using the

[Down] button until Generator / Enter to View is displayed.

Press [Enter] to read the measured frequency drift (see

Section 3.2.5). The display indicates frequency difference in

AES samples: a positive number indicates the AES input signal

is faster than the video reference. Therefore, if the two signals

are locked, the display will read “0 samples.” Pressing [Enter]

resets the counter.

Modifying the Pass Through Output Signal

The DM100 can be used to repair improperly authored audio

streams. When in Pass Through mode, the DM100 can modify

channel status bits in the first and third bytes of the AES3 signal.

In addition, the output audio channels can be skewed or swapped

to correct improper channel alignment (see Section 4.5).

2-9


Dolby ® DM100 User’s Manual

Chapter 3

Operation: Status Mode

After power-on, the DM100 defaults to Status mode, with the

top-level main status screen displayed. Status mode is used for

displaying, monitoring, and analyzing the input bitstream.

Note: References to the front-panel buttons are shown using brackets

throughout this manual (e.g., “[Status]”). References to multiple-button

combinations mean sequences, not simultaneous button presses. Press

the first button, release, and then press the next button.

3.1 Main Status Screen

The main status screen is the top level of the status menu tree. It

displays one of the following possible combinations of

information. The display shown below gives a typical example:

Dolby Digital B

3/2L 448kbps

Input Data Type

Dolby E Valid Dolby E bitstream

Dolby Digital

Valid 32-bit Dolby Digital

bitstream

DD/PCM

Valid 16-bit Dolby Digital

packed in Left channel

PCM/DD

Valid 16-bit Dolby Digital

packed in Right channel

DD/DD

Two valid Dolby Digital

bitstreams

PCM Valid PCM bitstream

NULL data NULL data type bitstream

Pause data Pause data type bitstream

Data Type X Other data type bitstream

No Input No incoming bitstream

The following pages describe the information displayed on the

second line for each type of input data.

3-1

Active Input Connector

A Set to Autodetect

B Set to BNC

X Set to XLR

O Set to Optical


Dolby ® DM100 User’s Manual Operation: Status Mode

Dolby E

When the incoming bitstream is Dolby ® E, the following

information will be displayed:

Dolby E B

5.1+2 24bit

Program Configuration 5.1+2

5.1+2x1

4+4

4+2x2

4+2+2x1

4+4x1

4x2

3x2+2x1

2x2+4x1

2+6x1

8x1

5.1

4+2

4+2x1

3x2

2x2+2x1

2+4x1

6x1

4

2+2

2+2x1

4x1

7.1

7.1scrn

Invalid Dolby E program

configuration

*******

3-2

16bit Bit Depth

20bit

24bit


Dolby ® DM100 User’s Manual Operation: Status Mode

Dolby Digital

When the incoming bitstream is Dolby Digital, the following

information will be displayed:

1+1

1/0

2/0

3/0

2/1

3/1

2/2

3/2

3/0L

2/1L

3/1L

2/2L

3/2L

Dolby Digital B

3/2L 448kbps

“L”means the LFE–

enabled bit is set in the

bitstream

PCM

When the incoming bitstream is PCM, and the DM100 has

locked to it, the following information will be displayed:

PCM B

44.1 kHz

48 kHz

44.1 kHz

32 kHz

Unknown Rate

3-3

56kbps

64kbps

80kbps

96kbps

112kbps

128kbps

160kbps

192kbps

224kbps

256kbps

320kbps

384kbps

448kbps

512kbps

576kbps

640kbps


Dolby ® DM100 User’s Manual Operation: Status Mode

NULL Data

When the incoming bitstream is Null data, as defined in the

IEC 61937 or SMPTE 337M standards, the following screen is

displayed:

NULL data

Pause Data

When the incoming bitstream is Pause data, as defined in the

IEC 61937 standard, the following screen is displayed:

PAUSE data

Data Type X

When the data type of the incoming bitstream is not recognized

as one of the preceeding types, the following screen is displayed:

Data Type X

3-4


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2 The Status Menus

From the top-level main Status display described above, you can

step through the status menus by pressing the [Up] or [Down]

button. Each menu below the top main Status display is

described in the following manual sections.

Scroll with the [Up]/[Down] buttons

Dolby E A

5.1+2 24bit

[Down]▐

Dolby E MD

ENTER to View

[Down]▐

Dolby Digital MD

ENTER to View

[Down]▐

AES3 Status

ENTER to View

[Down]▐

Input Level

ENTER to View

[Down]▐

Generator

ENTER to View

[Down]▐

Video Ref

29.97 fps

[Down]▐

Timecode 29 Dly

00:00:00:00 N/A

[Down]▐

Error Stats

ENTER to View

[Down]▐

Firmware Version

2.0.0.0

Top level Status display

(A typical display is shown.)

3-5

Dolby E metadata menu

Dolby Digital metadata menu

AES3 status menu

Input level menu

Bitstream generator status display

Video reference display

Timecode/delay display

Error status menu

DM100 firmware version


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.1 Dolby E Metadata Input Menu

After pressing [Enter] to view this menu, press the [Down] or

[Up] button to select the submenu options you wish to display.

Dolby E MD

ENTER to View

See page 3-2 for the list of possible

program configurations displayed.

23.98 fps

24 fps

25 fps [PAL]

29.97 fps [NTSC]

30 fps

50 fps

59.94 fps

60 fps

****************

N/A

DE Prog Config

[Down]▐

Dolby E Prog 1

ENTER to View

[Down]▐

Dolby E Prog 2—8

(depending on Dolby E

program configuration)

[Down]▐

DE Bit Depth

16, 20, or 24Bit

[Down]▐

DE Frame Rate

29.97 fps

[Down]▐

DE Position

Line 14

Displays the video line number

where the Dolby E data begins.

Line xxx

Refer to SMPTE-170M and ITU-R

BT.470-6 for video line structure.

Dolby E input not present or DM100

blank

decode format is not Dolby E.

Video reference not present. N/A

Video reference not equal to Dolby E Line

frame rate.

***

During an audio-follow-video switch, the Dolby E frame is in

danger of corruption if the “line” value displayed in this status

screen is less than 11 or greater than 30 for 29.97 fps (NTSC),

or less than 7 or greater than 35 for 25 fps (PAL).

“Px” represents the selected program number, where x is a

number between 1 and 8. Valid program numbers depend on the

Dolby E program configuration. For example, 5.1+2 is two

programs; therefore, only P1 and P2 are valid.

Each metadata program parameter selection is described in the

following sections.

3-6

[Enter]

Px Prog Desc

[Down]▐

Px Dialogue Lev

[Down]▐

Px Channel Mode

[Down]▐

Px LFE Channel

[Down]▐

Px Bitstrm Mode

[Down]▐

Px Line Mode Pro

[Down]▐

Px RF Mode Pro

[Down]▐

Px RF Ov Protect

[Down]▐

Px Center Dwnmx

[Down]▐

Px Srnd Dwnmx

[Down]▐

Px Dolby Srnd

[Down]▐

Px Mixing Level

[Down]▐

Px Room Type

[Down]▐

Px Copyright

[Down]▐

Px Orig Bitstrm

[Down]▐

Px Extnd Bitstrm

[Down]▐

Px DC Filter

[Down]▐

Px Lowpass Filt

[Down]▐

Px LFE Filter

[Down]▐

Px Srnd 3dB Attn

[Down]▐

Px Srnd Ph Shift

[Down]▐

Px Begin Gain

[Down]▐

Px End Gain


Dolby ® DM100 User’s Manual Operation: Status Mode

Px Prog Desc

Dolby E program description display:

Px Prog Desc

Description text

The DM100 has a 32-character buffer for each program, which

stores the first characters in the description text field for that

program. The display scrolls through the text automatically if the

string is greater than 16 characters.

Px Dialogue Lev

A typical example is shown for the Dolby E Dialogue

Normalization display:

P2 Dialogue Lev

–27 dB

***************

–1 dB

–2 dB

–3 dB




–31 dB

N/A

3-7


Dolby ® DM100 User’s Manual Operation: Status Mode

Px Channel Mode

A typical example is shown for the Dolby E Channel Mode

display:

P2 Channel Mode

2/0 Stereo

Px LFE Channel

1+1

1/0 Mono

2/0 Stereo

3/0

2/1

3/1

2/2

3/2

N/A

P2 LFE Channel

Disabled

Disabled

Enabled

N/A

Px Bitstrm Mode

A typical example is shown for the Dolby E Bitstream Mode

display:

P2 Bitstrm Mode

Main Complete

Main Complete

Main M&E

Assc Visual Imp

Assc Hear Imp

Assc Dialogue

Assc Commentary

Assc Emergency

Assc Voice Over

Main Sv Karaoke

N/A

3-8


Dolby ® DM100 User’s Manual Operation: Status Mode

Px Line Mode Pro

Px RF Mode Pro

The Dolby E Line Mode and RF Mode Profile program

parameters display the same second-line display.

A typical example is shown for the RF Mode Profile display:

If actual dynamic range

control data is present:

P2 RF Mode Pro

Music Standard

±xx dB


Press the [Enter] button

to toggle between a

numeric display and a bar

graph level display


� � � | � � �

RF: –48 dB 0 +48 dB

Line: –24 dB 0 +24 dB

Px RF Ov Protect

RF overmodulation protection.

P2 RF Ov Protect

Disabled

Disabled

Enabled

N/A

3-9

If dynamic range control

presets are present:

None

Film Standard

Film Light

Music Standard

Music Light

Speech

Invalid

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

Px Center Dwnmx

A typical example is shown for the Dolby E Center Downmix

display:

P2 Center Dwnmx

0.500 (-6.0 dB)

0.707 (-3.0 dB)

0.596 (-4.5 dB)

0.500 (-6.0 dB)

***************

N/A

Px Srnd Dwnmx

A typical example is shown for the Dolby E Surround Downmix

display:

P2 Srnd Dwnmx

0.707 (-3.0 dB)

0.707 (-3.0 dB)

0.500 (-6.0 dB)

0 (-999 dB)

***************

N/A

Px Dolby Srnd

A typical example is shown for the Dolby E Surround Mode

display:

P2 Dolby Srnd

Not Indicated

Not Indicated

Not Dolby Srnd

Dolby Srnd

***************

N/A

3-10


Dolby ® DM100 User’s Manual Operation: Status Mode

Px Mixing Level

A typical example is shown for the Dolby E Mixing Level

display:

P2 Mixing Level

80 dB

Px Room Type

A typical example is shown for the Dolby E Room Type display:

Px Copyright

80 dB

81 dB

82 dB




111 dB

Does Not Exist

N/A

P2 Room Type

80 dB

Not Indicated

Large

Small

****************

Does Not Exist

N/A

Px Orig Bitstrm

A typical example is shown for the Dolby E Copyright display.

The Original Bitstream program parameters display the same

second line:

P2 Copyright

No

3-11

No

Yes

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

Px Extnd Bitstrm

A typical example is shown for the Extended Bitstream metadata

display. Other possibilities are also shown:

Px Extnd Bitstrm

ENTER to view

Not Indicated

Lt/Rt

Dolby E Preferred Lo/Ro

Downmix Status *****************

Does Not Exist

N/A

1.414 (+3.0 dB)

1.189 (+1.5 dB)

1.000 (+0.0 dB)

Dolby E Downmix 0.841 (–1.5 dB)

Level Status 0.707 (–3.0 dB)

0.595 (–4.6 dB)

0.500 (–6.0 dB)

0 (–999 dB)

Not Active

Does Not Exist

N/A

Not Indicated

Dolby E Not Srnd EX

Surround EX TM Dolby Srnd EX

Status ****************

Not Active

Does Not Exist

N/A

Not Indicated

Dolby E Disabled

Headphone Enabled

Mode ****************

N/A

Dolby E Standard

A/D Converter HDCD

Type Does Not Exist

N/A

3-12

P2 Pref Dwnmx

Lt/Rt

Px Pref Dwnmx

[Down]▐

Px Lt/Rt C Dwnmx

[Down]▐

Px Lt/Rt S Dwnmx

[Down]▐

Px Lo/Ro C Dwnmx

[Down]▐

Px Lo/Ro S Dwnmx

[Down]▐

Px Dolby Srnd EX

[Down]▐

Px Dolby H Mode

[Down]▐

Px A/D Conv Type


Dolby ® DM100 User’s Manual Operation: Status Mode

Px DC Filter

Px Lowpass Filt

Px LFE Filter

Px Srnd 3dB Attn

Px Srnd Ph Shift

When any of these Dolby E metadata programs is selected, the

DM100 displays the same information as shown in the example.

A typical example is shown for the Dolby E Lowpass Filter

display.

Px Begin Gain

Px End Gain

A typical example is shown for the Dolby E Begin Gain and End

Gain display:

Px Begin Gain

ENTER to view

Gain ± yy.yy dB

–inf

N/A

“N/A” indicates Dolby E input is not

present or DM100 decode format is not

Dolby E.

3-13

P2 Lowpass Filt

Disabled

Disabled

Enabled

N/A

P2 LFE Begin Gain

+12.34 dB

On Programs 1, 2, 3, 4 Px L Bgn Gain

[Down]▐

On Programs 1–8 Px C Bgn Gain

[Down]▐

On Program 1 Px Ls Bgn Gain

[Down]▐

On Programs 1, 2, 3, 4 Px R Bgn Gain

[Down]▐

On Program 1 Px LFE Bgn Gain

[Down]▐

On Program 1 Px Rs Bgn Gain

[Down]▐

On Programs 1,2 Px S Bgn Gain


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.2 Dolby Digital Metadata Input Menu

After pressing [Enter] to select this function, press the [Down]

or [Up] button to select the parameter you wish to display.

Dolby Digital MD

ENTER to View

Each Dolby Digital metadata parameter display is described in

the following manual sections.

3-14

DD Dialogue Lev

[Down]▐

DD Channel Mode

[Down]▐

DD LFE Channel

[Down]▐

DD Data Rate

[Down]▐

DD Bitstrm Mode

[Down]▐

DD Line Mode Pro

[Down]▐

DD RF Mode Pro

[Down]▐

DD Center Dwnmx

[Down]▐

DD Srnd Dwnmx

[Down]▐

DD Dolby Srnd

[Down]▐

DD Mixing Level

[Down]▐

DD Room Type

[Down]▐

DD Copyright

[Down]▐

DD Orig Bitstrm

[Down]▐

DD Extnd Bitstrm

[Down]▐

DD Dual Mono MD

[Down]▐

DD Format

[Down]▐

DD Sample Rate

[Down]▐

DD Bitstream ID

[Down]▐

DD Stream #


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Dialogue Lev

A typical example is shown for the Dolby Digital Dialogue

Normalization Status display:

DD Dialogue Lev

–27 dB

DD Channel Mode

A typical example is shown for the Dolby Digital Channel Mode

display:

DD Channel Mode

2/0 Stereo

DD LFE Channel

A typical example is shown for the Dolby Digital LFE Status

display:

DD LFE Channel

Disabled

3-15

***************

–1 dB

–2 dB

–3 dB




–31 dB

N/A

1+1

1/0 Mono

2/0 Stereo

3/0

2/1

3/1

2/2

3/2

N/A

Disabled

Enabled

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Data Rate

A typical example is shown for the Dolby Digital Data Rate

display:

DD Data Rate

448 kbps

DD Bitstrm Mode

A typical example is shown for the Dolby Digital Bitstream

Mode display:

DD Bitstrm Mode

Main Complete

3-16

56 kbps

64 kbps

80 kbps

96 kbps

112 kbps

128 kbps

160 kbps

192 kbps

224 kbps

256 kbps

320 kbps

384 kbps

448 kbps

512 kbps

576 kbps

640 kbps

N/A

Main Complete

Main M & E

Assc Visual Imp

Assc Dialogue

Assc Commentary

Assc Emergency

Assc Voice Over

Main Sv Karaoke

N/A

“N/A” indicates that a Dolby Digital input is not

present, or the DM100 decode format is not

Dolby Digital.


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Line Mode Pro

DD RF Mode Pro

The Dolby Digital Line Mode and RF Mode Profile parameters

use the same display style.

A typical example is shown for the RF Mode Profile display:

If compre or dynrnge = 0,

the level displayed is 0.

If compre or dynrnge = 1,

The level displayed is the

decoded compre or dynrnge

value from the metadata.

DD RF Mode Pro

±xx dB

DD Center Dwnmx

A typical example is shown for the Dolby Digital Center

Downmix display:

3-17

±xx dB


Press [Enter] to toggle

between a numeric

display and a bar graph

level display


� � � | � � �

Rf: –48 dB 0 +48 dB

Line: –24 dB 0 +24 dB

DD Center Dwnmx

0.707 (–3.0 dB)

0.707 (-3.0 dB)

0.596 (-4.5 dB)

0.500 (-6.0 dB)

***************

Not Active

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Srnd Dwnmx

A typical example is shown for the Dolby Digital Surround

Downmix display:

DD Srnd Dwnmx

0.707 (-3.0 dB)

DD Dolby Srnd

A typical example is shown for the Dolby Digital, Dolby

Surround Mode display:

DD Dolby Srnd

Not Indicated

Not Indicated

Not Dolby Srnd

Dolby Srnd

***************

Not Active

N/A

DD Mixing Level

A typical example is shown for the Dolby Digital Mixing Level

status display:

DD Mixing Level

80 dB

3-18

0.707 (-3.0 dB)

0.500 (-6.0 dB)

0 (-999 dB)

***************

Not Active

N/A

80 dB

81 dB

82 dB




111 dB

Does Not Exist

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Room Type

A typical example is shown for the Dolby Digital Room Type

display:

DD Room Type

Large

DD Copyright

DD Orig Bitstrm

A typical example is shown for the Dolby Copyright status

display. The Original Bitstream program parameters display the

same second line:

DD Copyright

Yes

3-19

Not Indicated

Large

Small

**************

Does Not Exist

N/A

No

Yes

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Extnd Bitstrm

A typical example is shown for the Extended Bitstream

information display. Other possibilities are shown:

Px Extnd Bitstrm

ENTER to view

Not Indicated

LtRt

Dolby Digital LoRo

Preferred Downmix *****************

Status Does Not Exist

N/A

1.414 (+3.0 dB)

1.189 (+1.5 dB)

1.000 (+0.0 dB)

Dolby Digital 0.841 (–1.5 dB)

Downmix Level 0.707 (–3.0 dB)

Status 0.595 (–4.6 dB)

0.500 (–6.0 dB)

0 (–999 dB)

Not Active

Does Not Exist

N/A

Not Indicated

Dolby Digital Not Srnd EX

Surround EX Dolby Srnd EX

Status ****************

Not Active

Does Not Exist

N/A

Not Indicated

Dolby Digital Disabled

Headphone Enabled

Mode ****************

N/A

Dolby Digital Standard

A/D Converter HDCD

Type Does Not Exist

N/A

3-20

DD Pref Dwnmx

Lt/Rt

DD Pref Dwnmx

[Down]▐

DD Lt/Rt C Dwnmx

[Down]▐

DD Lt/Rt S Dwnmx

[Down]▐

DD Lo/Ro C Dwnmx

[Down]▐

DD Lo/Ro S Dwnmx

[Down]▐

DD Dolby Srnd EX

[Down]▐

DD Dolby H Mode

[Down]▐

DD A/D Conv Type


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Dual Mono MD

After pressing [Enter] to select this function, press the [Down]

or [Up] button to select the Dual Mono metadata parameter you

wish to display. A typical example screen is shown:

DD Dual Mono MD

ENTER to view

*****************

–1 dB

Dual Mono –2 dB

Dialogue –3 dB

Normalization •


Status –31 dB

N/A

80 dB

Dual Mono 81 dB

Mixing Level 82 dB

Status •


111 dB

Does Not Exist

N/A

Not Indicated

Dual Mono Large

Room Type Small

Status ****************

Does Not Exist

N/A

±xx dB


Press [Enter] to toggle

between a numeric

display and a bar graph

level display


� � � | � � �

RF: –48 dB 0 +48 dB

Line:

–24 dB 0 +24 dB

3-21

DM Dialogue Lev

–27 dB

If the Dolby Digital bitstream is

not a Dual Mono bitstream, the

level displayed will be 0.

DM Dialogue Lev

[Down]▐

DM Mixing Level

[Down]▐

DM Room Type

[Down]▐

DM RF Mode Pro

[Down]▐

DM Line Mode Pro


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Format

A typical example is shown for the Dolby Digital Format status

display:

DD Format

Pro 32-bit

DD Sample Rate

A typical example is shown for the Dolby Digital Sample Rate

status display:

DD Sample Rate

48 kHz

DD Bitstream ID

A typical example is shown for the Dolby Digital Bitstream ID

status display:

DD Bitstream ID

8

3-22

Pro 32-bit

Pro 16-bit Ch1

Pro 16-bit Ch2

Pro 16-bit Ch1&2

Consumer

N/A

48 kHz

44.1 kHz

32 kHz

N/A

1—8

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

DD Stream #

A typical example is shown for the Dolby Digital Stream

Number status display:

DD Stream #

0

3-23

1



7

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.3 AES3 Status Menu

After pressing [Enter] to select this menu, press the [Down] or

[Up] button to select the AES3 parameter you wish to display. A

typical example screen is shown:

AES3 Status

ENTER to view

Not Indicated

Reserved (1—3)

No Emphasis

Reserved (5)

50/15-us Emph

J.17 Emph

N/A

Locked

Unlocked

N/A

Not Indicated

48 kHz

44.1 kHz

32 kHz

N/A

Not Indicated

2-Channel

1-Channel

Primary/Sec

Stereo

User Defined (5)

User Defined (6)

Reserved (7—15)

N/A

20-bit

24-bit

20-bit+Aux

User Defined

Reserved (4—7)

N/A

A = bit 4 of byte 22

B = bit 5 of byte 22

C = bit 6 of byte 22

D = bit 7 of byte 22

ABCD

N/A

3-24

AES3 Mode

Professional

Professional

Consumer

N/A

Audio

Non-Audio

N/A

Emphasis

[Down]▐

Freq Mode

[Down]▐

Sample Freq

[Down]▐

Channel Mode

[Down]▐

User Bits

[Down]▐

Aux Bits

[Down]▐

Word Length

[Down]▐

Ref Signal

[Down]▐

Reliability

AES3 Mode

[Down]▐

Audio Mode

[Down]▐

Pro Chan Status

Enter to View

[Down]▐

Continued on next page

None

192-bit Block

Reserved AES18

User Defined

Reserved (4—15)

N/A

Not Indicated

23/19 bits

22/18 bits

21/17 bits

20/16 bits

24/20 bits

Reserved (6—7)

N/A

Not a Ref Signal

Grade 1

Grade 2

Reserved

N/A


Dolby ® DM100 User’s Manual Operation: Status Mode

Yes

No

N/A

2ch No Pre-Emph

Reserved 1—3

2ch 50/15us

Reserved (5—7)

N/A

XX represents the

category code number

in hex with leading

zeroes. The category

code is extracted from

byte 1 of the channel

status.

32 kHz

44.1 kHz

48 kHz

Reserved (1—3)

Reserved (5—11)

Reserved (13—15)

N/A

Not Indicated

16—24 bits

Reserved (6—7)

Not Indicated

Reserved (14—15)

N/A

Left

Right

N/A

xxxx samples

N/A

Pa spacing can be used to help

diagnose bitstream errors. Correct

values are:

Dolby Digital: 1,536 samples

Dolby E/NTSC: 1,601/2 samples

Dolby E/PAL: 1,920 samples

xxxxxx

N/A

XX

N/A

Copyright

[Down]▐

Additional Info

[Down]▐

Category Code

[Down]▐

Source Number

[Down]▐

Channel Number

[Down]▐

Sample Freq

[Down]▐

Clock Accuracy

[Down]▐

Word Length

Pa Alignment

[Down]▐

Pa Spacing

[Down]▐

Pc Value

[Down]▐

Pd Value

0

1

N/A

23▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ ▌ 00

Active bits within the current PCM

block of 1,536 samples are shown

as solid at the center of each bar.

3-25

Continued from previous page

[Down]▐

Cons Chan Status

Enter to View

[Down]▐

Not Indicated

1—15

N/A

Not Indicated

A (left)

B (right)

C—O

N/A

Level 2

Level 3

Level 1

Reserved

N/A


337M Status

Enter to View

[Down]▐

Validity Bit

[Down]▐

Bit Activity L

[Down]▐

Bit Activity R


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.4 Input Level Menu

Press [Enter] to display Input Level status. The display

combinations are shown below. A typical example screen is

shown:

Input is Dolby E DE

Input is Dolby Digital DD

Input is PCM PCM

No input, or channel not

present in input bitstream blank

Input Level

ENTER to view

Ch1—8

dB RMS dB Peak


Press [Enter] to toggle

between numeric display

and a bargraph RMS level

display.


� � � |� � � � �

– 90 dB RMS level 0 dB

Digital Full-Scale

Ch1 DE Prog 1 L

-10 dB –6 dB

3-26

Prog 1—8 Displays program

number if the input

bitstream is Dolby E.

Blank Input not Dolby E.

Left Front L

Right Front R

Center C

Low-Frequency Effects LFE

Left Surround Ls

Right Surround Rs

Mono Surround S

Ch 1 of a 1+1 stream C1

Ch 2 of a 1+1 stream C2

Channel not present in

input bitstream

Blank


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.5 Generator Status Display

The unit is generating a

non-PCM bitstream.

The unit is generating a

PCM bitstream.

The unit is in

Pass Through mode.

The unit is in

Latency Test mode.

The unit is in

A/V Freq Drift mode.

Press [Enter] to display Generator status. The possible display

combinations are shown below:

Generator

ENTER to view xxxxxHz –yydB

Generating

bitstream name

OR

PCM name

OR

blank

Pass Through

OR

Measured Latency

OR

A/V Freq Drift

See Section 4.2 for selecting stream and waveform names and

frequencies.

3-27

F1—F2 –yydB

–yydB

Waveform is Sine

or Square, Frequency and

level in dBFS.

Waveform is Frequency

Sweep, Frequency range and

level in dBFS.

Waveform is Pink or

White Noise, Level in dBFS.

N/A Waveform is Silence.

The latency between the

output and input of the

xxxx.x samples DM100 in samples or ms.

Press [enter] to switch

between samples and time.

xxx.x ms time

No Input No AES3 input

Noise burst not received

N/A within 1.5 times the max

latency setting.

The difference in clock rate

between the AES input and

the Video reference input.

A continuous counter

indicates the drift of the

xxxx samples AES input with respect to

the video. A positive

number indicates the AES

input signal is faster than

the video reference. Press

[Enter] to reset the counter.

No Input No AES3 input.

No Video No video input.

Video present, but not

Wrong Video Rate

at 29.97 or 25 fps.

N/A Waiting to make a reading.


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.6 Video Reference Status Display

A typical example is shown for the Video Reference input status

display:

Video Ref

29.29 fps

3-28

25 fps

Frame Rate. 29.97 fps

No video input. No Input

Video input present but invalid.

Video Ref

Error


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.7 Timecode Status Display

Timecode

Timecode xx Dly

00:00:00:00 N/A

Dolby Digital

Timecode data as derived from the timestamp of the stream

currently being decoded (if present). Encoding latency can be

conveyed to a downstream MPEG broadcast encoder with a

Dolby Digital stream.

Semicolons are used to separate the timecode fields when

receiving Drop Frame timecode.

Dolby E

Timecode data as carried within the Dolby E bitstream, derived

from the metadata.

“** :** :** :** N/A”

The display shown above occurs under any of the following

conditions:

• A Dolby E or Dolby Digital bitstream is not being decoded

(this includes selecting the PCM portion of a 16-bit Dolby

Digital/PCM stream).

• The current Dolby E timecode field is set to “invalid” or the

Dolby Digital bitstream does not contain timecode.

3-29

Timecode frame rate: 23, 24, 25, 29, or 30

(23=23.98 fps)

(29=29.97 fps)

Timestamp data burst delay, if present,

indicates the encode latency referenced

to A/V sync. A positive number indicates

an advance in milliseconds from the

reference, while a negative number

indicates a delay. Refer to SMPTE 339M

for further information.


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.8 Error Stats Menu

After pressing [Enter] to select the Error Statistics menu, press

the [Down] or [Up] button to select the desired error screen. A

typical example screen is shown.

The first screen displays any current error condition that

prevents correct operation of the DM100. Subsequent screens

display a historical count of errors. Error counts over 99 display

as 99. Press [Enter] to reset a displayed error count to 00.

Error Stats

ENTER to view

No Error

The channel mode in Dolby E Invalid Ch Mode

input is invalid.

Selected Dolby E program does Invalid Program

not exist.

Selected Decode Format not Invalid Format

present in input.

Selected AES Channel does not Invalid AES Ch

contain a valid Dolby Digital

stream.

Selected Stream # is not present Invalid Stream #

or does not contain a valid

Dolby Digital stream.

Selected Output Channel (for Invld Output Ch

speaker/headphones) is not

present in the input signal.

Selected generator clock source Invalid Gen Clk

is missing or bad, or in I/O

Drift mode, the video input is

missing or not at 29.97 or 25

fps.

The input is not set to No Input

Autodetect and the selected

input has no valid AES signal

or there is no input when in

A/V Freq Drift or Latency Test

modes.

3-30

Error Cond

No Error

When receiving a

bitstream, this screen

shows the number of

frames where the SMPTE-

337M Pa word does not

appear in the Left channel.

Parity, Code,

Confidence

Error Cond

[Down]▐

Dolby E Errors

CRC:xx

[Down]▐

Dolby D Errors

CRC:xx

[Down]▐

Pa Alignment

ERR:xx

[Down]▐

AES3 Errors 1

P:aa CD:bb CF:cc

[Down]▐

Professional AES3 Errors 2

Channel Status CRC CCRC:dd


Dolby ® DM100 User’s Manual Operation: Status Mode

3.2.9 DM100 Firmware Version

This last Status menu item displays the version of the firmware

currently installed in your DM100.

Firmware Version

2.0.0.0

Pressing [Down], [Esc], or [Status] returns the display to the

top-level Main Status screen.

3-31


Dolby ® DM100 User’s Manual

Chapter 4

Operation: Setup Mode

Introduction

Pressing [Setup] switches the DM100 into Setup mode. Use this

function to configure your DM100. All setup settings are saved

when the unit is turned off. The settings shown in bold are the

factory defaults. The setup menu choices are:

DM100 Main Setup

Monitor Control

The following pages show the setup selections available for each

of the menu choices.

4-1

Monitor Control

[Down]▐

Gen Control

[Down]▐

AES3 Output

[Down]▐

User Presets

[Down]▐

I/O Control

[Down]▐

System Settings


Dolby ® DM100 User’s Manual Operation: Setup Mode

4.1 Monitor Control

The Monitor Control menu contains all of the functions that

control the audio output of the DM100. After pressing [Enter] to

select the Monitor Control menu, press the [Down] or [Up]

button to choose the desired setting:

Decode Format chooses the type of bitstream the DM100 will

decode. This is normally set to Autodetect; however, it is

possible to force the DM100 to decode only one stream type, if

required.

Output Ch Map chooses which audio channels or downmix

(Lt,Rt or Lo,Ro) are output from the headphone or speaker.

Dolby E Prog Sel selects one of the available programs in a

Dolby ® E stream for monitoring.

DE Dialogue Lev applies the metadata parameter Dialogue

Level or “dialnorm” to the audio output of a Dolby E stream.

DD Stream Select and AES3 Ch Select choose which signal

from a multiplexed Dolby Digital bitstream is decoded.

DD Compression applies Dolby Digital dynamic range control

data to the audio output. RF is the heaviest compression and

Custom is the lightest. DD compression can be useful when

listening in a noisy environment.

When listening through the speaker, this setting has no effect,

and RF Mode is always used.

Headphone Mode sets mono or stereo mode for the

headphones. Mono = (L+R)/2.

4-2


Dolby ® DM100 User’s Manual Operation: Setup Mode

Custom disables

dynamic range

compression, except

when listening to a

downmix.

Autodetect

Dolby E

Dolby Digital

PCM

L=Lo R=Ro

L=Lt R=Rt

L=L R=R

L=C R=C

L=Ls R=Rs

L=LFE R=LFE

Program 1

Program 2—8

Enabled

Disabled

Autodetect

Stream 0—7

Autodetect

Channel 1

Channel 2

Channel 1+2

Line Mode

RF Mode

Custom

Stereo

Mono

DM100 Main Setup

Monitor Control

4-3

[Enter]

[Enter]

[Enter]

Monitor Control

Decode Format

[Down]▐

Monitor Control

Output Ch Map

[Down]▐

Monitor Control

Dolby E Prog Sel

[Down]▐

Monitor Control

DE Dialogue Lev

[Down]▐

Monitor Control

DD Stream Select

[Down]▐

Monitor Control

AES3 Ch Select

[Down]▐

Monitor Control

DD Compression

[Down]▐

Monitor Control

Headphone Mode


Dolby ® DM100 User’s Manual Operation: Setup Mode

4.2 Gen Control

The Gen Control menu contains all of the settings for the

bitstream generator. After pressing [Enter] to select the

Generator Control menu, press the [Down] or [Up] button to

choose the desired setting:

Output Mode switches the generator on or off, either passing

through the input signal to the output connectors or connecting

the generated signal to the output connectors. It also sets the unit

to latency measurement or A/V frequency drift measurement

modes.

Gen Stream Sel selects the generator output stream from a list

of Dolby E, Dolby Digital, and PCM streams.

PCM Waveform contains the settings for the PCM generator

signal, allowing sine, square, sweep, and pink or white noise

signals to be created.

DE Offset allows the Dolby E bitstream to be placed a number

of lines away from the video sync point (a valid video reference

input is needed for this function).

DD Ch Mode chooses where to place a Dolby Digital stream in

the output AES3 stream (Channel 1+2 is the usual setting).

When measuring the latency of external equipment, the Noise

Burst Rate function sets the frequency of the short noise bursts.

See Section 2.7 for more information. The larger the setting, the

less frequently the noise bursts are generated, and the larger the

latencies that may be measured. However, larger settings

increase the time taken to make each measurement.

New bitstreams may be uploaded to the DM100 using the

Upload Bitstream function. To load and store new streams,

connect a Windows ® PC to the DM100 using the supplied cable.

The baud rate is fixed at 115.2 kbps. Activate the Upload

Bitstream function on the DM100 and follow the prompts on the

PC software supplied. During the upload, the DM100 display

will show progress. When complete, reboot using the [Esc] key.

4-4


Dolby ® DM100 User’s Manual Operation: Setup Mode

Generator

Latency Test

A/V Freq Drift

Pass Through

PCM

DE stream names

DD stream names

Sine

Square

Freq Sweep

Silence

Pink Noise

White Noise

1000 Hz

20 Hz

16000 Hz

[Up] [Down] buttons step frequency.

[Shift] toggles between 10 Hz and

1 kHz steps. [Enter] selects.

1 to 10 seconds, default is 5 sec

Use [Up] [Down] buttons

–60 to 0 dBFS, default –20 dBFS

Use [Up] [Down] buttons

Both, Left, Right

2 to 10 seconds, default is 2 sec.

Line 14

Sets the video line number where

the Dolby E data begins. Refer to

SMPTE-170M and ITU-RBT.470-6

for video line structure. The correct

line number is 14 for 29.97 fps

(NTSC) signals and 11 for 25 fps

(PAL) signals.

Channel 1

Channel 2

Channel 1+2

Ready to Load

to Abort

DM100 Main Setup

Gen Control

[Enter]

[Enter]

[Enter]

[Enter]

Gen Control

Output Mode

[Down]▐

Gen Control

Gen Stream Sel

[Down]▐

Gen Control When generating PCM

PCM Waveform

[Down]▐

Gen Control When generating PCM

PCM Frequency Sine or Square waveform

[Down]▐

Gen Control

PCM Sweep Min F

[Down]▐ When generating

Gen Control PCM Freq Sweep

PCM Sweep Max F Waveforms

[Down]▐

Gen Control

PCM Sweep Time

[Down]▐

Gen Control When generating PCM

PCM Amplitude (except silence)

[Down]▐

Gen Control When generating PCM

PCM Channel

[Down]▐

Gen Control When Output mode is

Noise Burst Rate Latency Test

[Down]▐

Gen Control When generating

DE Position Dolby E streams

[Down]▐

Gen Control When generating

DD Ch Mode Dolby Digital streams

[Down]▐

Gen Control

Upload Bitstream

Upload Bitstream

ENTER=Yes ESC=No

4-5

[Enter]


Dolby ® DM100 User’s Manual Operation: Setup Mode

4.3 AES3 Output

The AES3 Output menu allows the user to control the value of

the AES3 status bits present on the output of the DM100. The

output can be set to pass through each parameter from the input

(or from the generator), or each parameter can be manually set to

a desired value. When a value has been changed, the current

decode LED will flash (long on, short off) to indicate this

change. To reset all of the parameters, use the Pass Through All

function.

4-6


Dolby ® DM100 User’s Manual Operation: Setup Mode

Not Indicated

Reserved (1—3)

No Emphasis

Reserved (5)

50/15-us Emph

J.17 Emph

Pass Through

Locked

Unlocked

Pass Through

Not Indicated

48 kHz

44.1 kHz

32 kHz

Pass Through

Pass Through

No

Yes

2ch No Pre-Emph

Reserved 1—3

2ch 50/15us

Reserved (5—7)

Pass Through

Pass Through

32 kHz

44.1 kHz

48 kHz

DM100 Main Setup

AES3 Output

Professional

Consumer

Pass Through

Audio

Non-Audio

Pass Through

Pro Chan Status

Emphasis

[Down]▐

Pro Chan Status

Freq Mode

[Down]▐

Pro Chan Status

Sample Freq

Cons Chan Status

Copyright

[Down]▐

Cons Chan Status

Additional Info

[Down]▐

Cons Chan Status

Sample Freq

0

1

Pass Through

Pass Through All

ENTER=Yes ESC=No

4-7

[Enter]

AES3 Output

AES3 Mode

[Down]▐

AES3 Output

Audio Mode

[Down]▐

AES3 Output

Pro Chan Status

[Down]▐

AES3 Output

Cons Chan Status

[Down]▐

AES3 Output

Validity Bit

[Down]▐

AES3 Output

Pass Through All


Dolby ® DM100 User’s Manual Operation: Setup Mode

4.4 User Presets

Up to four user presets can be saved, named, and recalled. These

presets contain a copy of the DM100 setup information.

01-

02-

03-

04-

After selecting preset 01

number using the 02

[Up]/[Down] buttons, 03

press [Enter] to 04

move to the editing

screen.

DM100 Main Setup

User Presets

4-8

[Enter]

[Enter]

[Enter]

User Presets

Recall Preset

[Down]▐

User Presets

Save Preset

xx is the preset number. Press the Enter xx Name

[Up] or [Down] buttons to move name

through the alphabet. Press [Enter]

to select the character and move to

next position. Use [Esc] to make

any corrections.

After 12 characters (including Save Settings?

spaces) have been entered, the ENTER=Yes ESC=No

preset and name can be saved.


Dolby ® DM100 User’s Manual Operation: Setup Mode

4.5 I/O Control

The I/O control menu configures the physical input and output

connections of the DM100. Input Select allows the user to

choose a specific physical input rather than the default of

Autodetect. Gen Clock Source chooses the reference signal for

the generator. DAC on Non-Audio sets audio output mute or

active when the incoming bitstream is flagged as non-audio data.

Optical Output switches the Toslink TM

optical output on or off.

If not required, disable it to extend battery life.

Logging Output can be used for long-term data recording.

See Section 5.1 for more information.

Passthru Ch Swap allows the output channels to be swapped or

skewed when in Pass Through mode.

Autodetect

BNC

XLR

Optical

Digital Input

Video Ref 48 kHz

Internal 48 kHz

Mute

Active

Enabled

Disabled

Normal

Swapped

Skewed

DM100 Main Setup

I/O Control

4-9

[Enter]

[Enter]

[Enter]

I/O Control

Input Select

[Down]▐

I/O Control

Gen Clock Source

[Down]▐

I/O Control

DAC on Non-Audio

[Down]▐

I/O Control

Optical Output

[Down]▐

I/O Control

Logging Output

[Down]▐

I/O Control

Passthru Ch Swap

Input Swapped Output Skewed Output

Left L0 L1 L2 L3 R0 R1 R2 R3 R0 R1 R2

Right R0 R1 R2 R3 L0 L1 L2 L3 L0 L1 L2 L3


Dolby ® DM100 User’s Manual Operation: Setup Mode

4.6 System Settings

The System Settings menu contains options for setting user

preferences for the DM100. RS-232 Baud Rate controls the

speed of the RS-232 port logging data. Unit Name allows entry

of up to 12 characters to give a DM100 a unique identity. This is

displayed during power on. The Power Management function

controls how long the unit remains switched on after the last

button press when operating on battery power. LCD Backlight

and Contrast Adjust control aspects of the LCD. Firmware

Upgrade is used to load new firmware into the DM100.

Used for data logging. 115.2 kbps

(see Section 4.5) 38.4 kbps

19.2 kbps

To edit this line, DM100

see Section 4.4

15 min

Auto power-off 10 min

setting 5 min

Disabled

30 min

Backlight always

on, if enabled.

Note: Backlight can

also be toggled on and

off by pressing [Shift]

then [Power] button

(battery operation only).

Enabled

Disabled

DM100 Main Setup

System Settings

Contrast Adjust

▐▐▐▐

Use [Up]/[Down]

During the upgrade, the display Ready to Load

will show progress. When complete, to Abort

the DM100 will reboot. The data rate

is fixed at 115.2 kbps.

Note: This function can be accessed directly. Turn off the DM100

by pressing the [Power] button. Press the [Power] button again

while holding down the [Setup] button.

4-10

[Enter]

[Enter]

Firmware Upgrade

ENTER=Yes ESC=No

[Enter]

System Settings

RS232 Baud Rate

[Down]▐

System Settings

Unit Name

[Down]▐

System Settings

Power Management

[Down]▐

System Settings

LCD Backlight

[Down]▐

System Settings

Contrast Adjust

[Down]▐

System Settings

Firmware Upgrade


Dolby ® DM100 User’s Manual Operation: Setup Mode

Note: When powered from the external power supply, the Power

Management setting is ignored and the unit remains switched

on. The LCD backlight and keypad backlights are also turned

on, overriding the LCD Backlight setting.

4-11


Dolby ® DM100 User’s Manual

Chapter 5

Reference Information

5.1 Data Transfer

Connect the RS-232 port on the front of the DM100 to a

computer using the cable provided. The RS-232 serial interface

is used for:

• Test bitstream loading.

• Data logging. Status information can be transferred from

the DM100 via a terminal program. The status

information is transmitted in the form of text messages

that can be read on the terminal display.

• Firmware upgrades.

Test Bitstream Loading

Test bitstream loading is accomplished using the Gen Control

setup menu. Press the [Setup] button, then use the [Down]

button to step to the Gen Control menu. See Section 4.2 for

more information. The table at the end of this section lists

possible error messages. Test bitstreams are loaded at a fixed

data rate of 115.2 kbps.

Data Logging

This function can be used for long-term data recording. Any

standard terminal program may be used on the computer. The

logged data is in this order: time, parameter, and value. The

logged time is the elapsed time since the DM100 was last

switched on. A fixed set of parameters is always logged (input

format, errors, etc.). One additional parameter may be logged by

navigating to the status screen that contains that parameter.

5-1


Dolby ® DM100 User’s Manual Reference Information

First, set the baud rate you wish to use via the System Settings

menu: Press the [Setup] button, then use the [Down] button to

step to the System Settings menu. Press [Enter] and select the

desired data rate with the [Up/Down] buttons. Press [Enter] to

save. Next, to initiate logging: Press the [Setup] button again,

then use the [Down] button to step to the I/O Control menu.

Press [Enter], then use the [Down] button to step to Logging

Output. Press [Enter] then use the [Down] button to select

Enable. Press [Enter] to start logging via the RS-232 connection

to your terminal program. See Sections 4.5 and 4.6.

Firmware Upgrade

With the DM100 powered off, press the [Power] button, then

hold down the [Setup] button. The DM100 will display the

Firmware Upgrade screen. The data transfer operates at a fixed

data rate of 115.2 kbps. If an error occurs during the upgrade,

the Error LED illuminates, an error message is displayed, and

the data transfer halts.

Pressing the [Esc] button exits the upgrade mode if data is not

being transferred, or turns the unit off if a data transfer error

occurs.

Data Transfer Error Messages:

Error Message Display Description

HDR CHKSUM ERR Invalid checksum in file’s header.

HDR LENGTH ERR Invalid length in file’s header.

DATA CHKSUM ERR Invalid checksum in data portion of file.

DATA LENGTH ERR Invalid data length specified in file’s header.

FLASH INIT ERR Flash memory detection failed: device code not recognized.

FLASH ERASE ERR Flash sector protected and can not be erased.

FLASH PGM ERR XX Flash not blank at address YYYYYY (hex). Flash module

AT ADDR YYYYYY error code given in XX (hex).

IMAGE SIZE ERR Error in downloaded image size or address: Too large for

either RAM or flash.

VERIFY ERR Programmed image in flash does not match downloaded

image after programming.

PRODUCT ERR Product code in file’s header is not “DM100.”

FLASH MEM FULL No space left in flash memory (when loading test bitstreams).

TOO MANY STREAMS There is a limit of 200 streams in the unit.

5-2


Dolby ® DM100 User’s Manual Reference Information

5.2 Unit Reset

Restore Default Settings

With the DM100 powered off, press [Power] while holding

down the [Enter] button. The factory default settings are restored

without changing your presets or stored test bitstreams.

Hardware Reset

In the unlikely event that the restore procedure above does not

work, the unit can also be reset by inserting a pen point or paper

clip into the RESET hole on the back of the DM100. The unit

will reset and power off.

5-3


Dolby ® DM100 User’s Manual Reference Information

5.3 Connector Pinout Information

5.3.1 RS-232 Serial Port

Pin Connection Description

1 NC

2 NC

3 RX Asynchronous data out

4 Ground

5 TX Asynchronous data in

6 NC

7 NC

8 NC

Note: This unit is a DCE device designed for connection to a DTE

device. The TX is the data input and the RX is the data output

5.3.2 XLR Connectors

Pin Connection

1 Signal Ground

2 Signal +

3 Signal –

5.3.3 Headphone Connector

Pin Connection

Tip Left Channel

Ring Right Channel

Sleeve Common

5-4


Dolby ® DM100 User’s Manual Reference Information

5.4 DM100 Specifications

Sampling Rates

48 kHz for all modes,

32 kHz and 44.1 kHz for Dolby Digital

and PCM

Video Frame Rates

29.97 and 25 fps

Frequency Response

Digital Outputs: 20 Hz–20 kHz, ±0.25 dB

Distortion


DM100 User’s Manual Reference Information

5.5 System Block Diagram

V-Ref

Clock generation

Video Reference

Toslink

AES-3

Transmitter

Toslink

BNC

Digital Signal

Processor

AES-3

Receiver

..

.

5-6

XLR

BNC

Headphones

XLR

Internal Speaker

Keypad

Front Panel

LCD and

LEDs

RS-232

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